The emergence of Ultrabook has also driven the change of materials for notebook casing. Ultrabook’s A-side is very thin and has touch screen function, so it requires high strength; what’s more, A side determines the outer appearance to the maximum extent. In accordance with the cost of A side, the most expensive material comes to carbon fiber textile reinforce or magnesium alloy die casting, followed by aluminum stamping. However, the appearance of carbon fiber is not flexible enough; and the strength of CFRP remains nearly the same as that of magnesium alloy.

Global and China Mobile PC Casing (Enclosure)
Industry Report, 2012-2013
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mobile-pc-casing-enclosure-industry-report-2012-2013-
market-report.html
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 In 2012, it becomes the most conspicuous trend of notebook casing that
the surfaces A, B, C and D employ different materials. The main reason
lies in the popularity of Apple Unibody aluminum alloy casing;
consequently, other peers follow up Apple’s aluminum alloy casing so as
to maintain their market share. Yet, it takes a long time and
considerable capacity to produce Unibody aluminum alloy casing. The
capacity of Unibody aluminum alloy casing giants Foxconn and Catcher
has been fully occupied by Apple.
 The emergence of Ultrabook has also driven the change of materials for
notebook casing. Ultrabook’s A-side is very thin and has touch screen
function, so it requires high strength; what’s more, A side determines
the outer appearance to the maximum extent. In accordance with the
cost of A side, the most expensive material comes to carbon fiber textile
reinforce or magnesium alloy die casting, followed by aluminum
stamping. However, the appearance of carbon fiber is not flexible
enough; and the strength of CFRP remains nearly the same as that of
magnesium alloy.
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 B side is usually linked with A side, made of plastic.
 The cost of C side is the highest. C side not only accommodates the
keyboard, but also supports various structural parts. Therefore, C side
should have the highest strength. Due to complex shape and time-
consuming processing, C side is more expensive than A side. The cost of
Apple’s Unibody aluminum alloy CNC ranks first, and magnesium alloy
casting ranks second.
 D side also plays an exceedingly important role in the Ultrabook field.
Being ultra thin, the heat dissipation problem of Ultrabook should be paid
attention to. Ultrabook uses flat LiPolymer battery, which requires a
sufficiently high strength. In accordance with the cost of D side, the most
expensive material is carbon fiber textile reinforce or magnesium alloy die
casting, followed by aluminum stamping, then glass fiber reinforce, and
the worst is plastic.
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